Name Size Creator Creation Date Labels Comment  
PDF File 1668674.pdf 712 kB Shaun Ewing May 08, 1928 00:00
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US-1668674-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph
PDF File 1668638.pdf 1.01 MB Shaun Ewing May 08, 1928 00:00
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US-1668638-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph
PDF File 1668637.pdf 1.08 MB Shaun Ewing May 08, 1928 00:00
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US-1668637-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph
PDF File 1667824.pdf 527 kB Shaun Ewing May 01, 1928 00:00
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US-1667824-A // Multiple-unit cable // Richey Archie L. // American Telephone & Telegraph
PDF File 1667792.pdf 549 kB Shaun Ewing May 01, 1928 00:00
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US-1667792-A // Radio signaling system // Martin De Loss K. // American Telephone & Telegraph
PDF File 1667753.pdf 412 kB Shaun Ewing May 01, 1928 00:00
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US-1667753-A // Program-selecting circuits // Toomey John F. // American Telephone & Telegraph
PDF File 1666988.pdf 568 kB Shaun Ewing Apr 24, 1928 00:00
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US-1666988-A // Trunking system // Blauvelt William G. // American Telephone & Telegraph
PDF File 1666965.pdf 188 kB Shaun Ewing Apr 24, 1928 00:00
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US-1666965-A // Differential duplex telegraph repeater // Herman Joseph // American Telephone & Telegraph
PDF File 1666158.pdf 361 kB Shaun Ewing Apr 17, 1928 00:00
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US-1666158-A // System for binaural transmission of signals // Affel Herman A. // American Telephone & Telegraph
PDF File 1666154.pdf 480 kB Shaun Ewing Apr 17, 1928 00:00
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US-1666154-A // Distribution of programs over wires // Toomey John F. // American Telephone & Telegraph
PDF File 1666153.pdf 909 kB Shaun Ewing Apr 17, 1928 00:00
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US-1666153-A // Program-selecting circuits // Toomey John F. // American Telephone & Telegraph
PDF File 1665297.pdf 318 kB Shaun Ewing Apr 10, 1928 00:00
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US-1665297-A // Grounded duplex telegraph system // Cory Samuel I. // American Telephone & Telegraph
PDF File 1665296.pdf 297 kB Shaun Ewing Apr 10, 1928 00:00
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US-1665296-A // Grounded duplex telegraph system // Cory Samuel I. // American Telephone & Telegraph
PDF File 1665283.pdf 843 kB Shaun Ewing Apr 10, 1928 00:00
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US-1665283-A // Signaling system // Singer Fred J. // American Telephone & Telegraph
PDF File 1664652.pdf 450 kB Shaun Ewing Apr 03, 1928 00:00
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US-1664652-A // Picture-transmitting system // Watson Edward F. ; Weaver Allan // American Telephone & Telegraph
PDF File 1664468.pdf 610 kB Shaun Ewing Apr 03, 1928 00:00
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US-1664468-A // Program-selecting circuits // Strieby Maurice E. // American Telephone & Telegraph
PDF File 1664455.pdf 524 kB Shaun Ewing Apr 03, 1928 00:00
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US-1664455-A // Electrical translating circuit // King Robert W. // American Telephone & Telegraph
PDF File 1664453.pdf 667 kB Shaun Ewing Apr 03, 1928 00:00
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US-1664453-A // Manual morse multiplex system // Herman Joseph // American Telephone & Telegraph
PDF File 1663750.pdf 420 kB Shaun Ewing Mar 27, 1928 00:00
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US-1663750-A // Automatic transmission-measuring set // Best Fred H. // American Telephone & Telegraph
PDF File 1663748.pdf 621 kB Shaun Ewing Mar 27, 1928 00:00
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US-1663748-A // Braid stripper for insulated wires // Bender Hugh D. ; Kent Robert John // American Telephone & Telegraph
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